Back to results
US 6,786,089 B2Granted
Airflow meter
AssigneeDenso Corporation
InventorsKoichi Goto, Yukihiro Takeuchi, Takao Iwaki, Yasushi Goka
Life of this patent
Estimating the term…
Abstract
An airflow meter has a member that defines a bypass passage. The bypass passage has a sensing passage in which a sensor tip is disposed. The sensing passage is restricted in at least a lateral direction that is a direction perpendicular to both a longitudinal direction of the sensing passage and a perpendicular direction perpendicular to the surface of the sensor tip. This arrangement defines relatively wider distance in the perpendicular direction on the sensor tip.
Claims20
An airflow meter, comprising:
- a member that defines a bypass passage in which a bypass air flow comprising a part of air flowing in a main passage is introduced;
- and
- a sensor element disposed in the bypass passage, for detecting an amount of airflow, said sensor element being disposed so that a width of the sensor element is perpendicular to a direction of bypass air flow therepast, wherein
- the bypass passage has a sensing passage which restricts a cross-sectional area of the bypass passage along a longitudinal direction of the bypass passage at least before the sensor element, the sensing passage being restricted in a lateral direction that is perpendicular to said direction of bypass air flow and parallel to a width direction of the sensor element.
1 more element
Dependencies are inferred from the claim text.